./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_670516be-31d7-4edb-a3cb-4c65aeaa60d4/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_670516be-31d7-4edb-a3cb-4c65aeaa60d4/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_670516be-31d7-4edb-a3cb-4c65aeaa60d4/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_670516be-31d7-4edb-a3cb-4c65aeaa60d4/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_670516be-31d7-4edb-a3cb-4c65aeaa60d4/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_670516be-31d7-4edb-a3cb-4c65aeaa60d4/bin-2019/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9918b49e0d76e4ce36b6a6760021b33460a8ae9b .............................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:36:31,969 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:36:31,971 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:36:31,979 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:36:31,979 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:36:31,980 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:36:31,981 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:36:31,983 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:36:31,984 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:36:31,985 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:36:31,986 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:36:31,986 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:36:31,987 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:36:31,987 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:36:31,989 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:36:31,989 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:36:31,990 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:36:31,992 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:36:31,993 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:36:31,995 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:36:31,995 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:36:31,997 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:36:31,998 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:36:31,999 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:36:31,999 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:36:32,000 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:36:32,001 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:36:32,002 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:36:32,002 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:36:32,003 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:36:32,003 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:36:32,004 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:36:32,004 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:36:32,005 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:36:32,006 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:36:32,006 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:36:32,006 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_670516be-31d7-4edb-a3cb-4c65aeaa60d4/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-10-26 23:36:32,018 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:36:32,018 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:36:32,019 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:36:32,019 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 23:36:32,019 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 23:36:32,019 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 23:36:32,019 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:36:32,020 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 23:36:32,020 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:36:32,020 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 23:36:32,020 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:36:32,021 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:36:32,021 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:36:32,021 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:36:32,022 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 23:36:32,022 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:36:32,022 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:36:32,022 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-10-26 23:36:32,022 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-10-26 23:36:32,022 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:36:32,023 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:36:32,023 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-10-26 23:36:32,023 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:36:32,023 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:36:32,023 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:36:32,023 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-10-26 23:36:32,023 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:36:32,024 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:36:32,024 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_670516be-31d7-4edb-a3cb-4c65aeaa60d4/bin-2019/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9918b49e0d76e4ce36b6a6760021b33460a8ae9b [2018-10-26 23:36:32,050 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:36:32,060 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:36:32,063 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:36:32,064 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:36:32,064 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:36:32,065 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_670516be-31d7-4edb-a3cb-4c65aeaa60d4/bin-2019/ukojak/../../sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i [2018-10-26 23:36:32,111 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_670516be-31d7-4edb-a3cb-4c65aeaa60d4/bin-2019/ukojak/data/fea99422f/70bacdbe8217497bb2a09ef14b6637a1/FLAG62bb9956c [2018-10-26 23:36:32,474 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:36:32,474 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_670516be-31d7-4edb-a3cb-4c65aeaa60d4/sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i [2018-10-26 23:36:32,479 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_670516be-31d7-4edb-a3cb-4c65aeaa60d4/bin-2019/ukojak/data/fea99422f/70bacdbe8217497bb2a09ef14b6637a1/FLAG62bb9956c [2018-10-26 23:36:32,491 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_670516be-31d7-4edb-a3cb-4c65aeaa60d4/bin-2019/ukojak/data/fea99422f/70bacdbe8217497bb2a09ef14b6637a1 [2018-10-26 23:36:32,493 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:36:32,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 23:36:32,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:36:32,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:36:32,498 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:36:32,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:36:32" (1/1) ... [2018-10-26 23:36:32,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af8d4b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:32, skipping insertion in model container [2018-10-26 23:36:32,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:36:32" (1/1) ... [2018-10-26 23:36:32,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:36:32,526 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:36:32,638 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:36:32,641 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:36:32,654 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:36:32,665 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:36:32,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:32 WrapperNode [2018-10-26 23:36:32,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:36:32,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:36:32,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:36:32,666 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:36:32,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:32" (1/1) ... [2018-10-26 23:36:32,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:32" (1/1) ... [2018-10-26 23:36:32,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:36:32,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:36:32,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:36:32,695 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:36:32,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:32" (1/1) ... [2018-10-26 23:36:32,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:32" (1/1) ... [2018-10-26 23:36:32,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:32" (1/1) ... [2018-10-26 23:36:32,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:32" (1/1) ... [2018-10-26 23:36:32,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:32" (1/1) ... [2018-10-26 23:36:32,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:32" (1/1) ... [2018-10-26 23:36:32,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:32" (1/1) ... [2018-10-26 23:36:32,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:36:32,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:36:32,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:36:32,711 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:36:32,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_670516be-31d7-4edb-a3cb-4c65aeaa60d4/bin-2019/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-10-26 23:36:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:36:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:36:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 23:36:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 23:36:33,430 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:36:33,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:36:33 BoogieIcfgContainer [2018-10-26 23:36:33,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:36:33,431 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-10-26 23:36:33,431 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-10-26 23:36:33,438 INFO L276 PluginConnector]: CodeCheck initialized [2018-10-26 23:36:33,439 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:36:33" (1/1) ... [2018-10-26 23:36:33,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:36:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:36:33,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 17 states and 22 transitions. [2018-10-26 23:36:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2018-10-26 23:36:33,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-26 23:36:33,484 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:36:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:36:33,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:36:33,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:36:33,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2018-10-26 23:36:33,656 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2018-10-26 23:36:33,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-26 23:36:33,656 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:36:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:36:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:36:33,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:36:33,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 17 states and 19 transitions. [2018-10-26 23:36:33,679 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-10-26 23:36:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-26 23:36:33,680 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:36:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:36:33,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:36:33,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:36:34,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:36:34,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 19 states and 23 transitions. [2018-10-26 23:36:34,023 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2018-10-26 23:36:34,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-26 23:36:34,024 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:36:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:36:34,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:36:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:36:34,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:36:34,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 21 states and 27 transitions. [2018-10-26 23:36:34,433 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2018-10-26 23:36:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-26 23:36:34,436 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:36:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:36:34,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:36:34,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:36:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:36:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 23 states and 30 transitions. [2018-10-26 23:36:34,941 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2018-10-26 23:36:34,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 23:36:34,942 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:36:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:36:34,966 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:36:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:36:35,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:36:35,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 25 states and 33 transitions. [2018-10-26 23:36:35,087 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2018-10-26 23:36:35,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-26 23:36:35,087 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:36:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:36:35,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:36:35,211 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:36:35,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:36:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 35 states and 51 transitions. [2018-10-26 23:36:35,679 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 51 transitions. [2018-10-26 23:36:35,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 23:36:35,680 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:36:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:36:35,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:36:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:36:36,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:36:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 29 states and 32 transitions. [2018-10-26 23:36:36,782 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2018-10-26 23:36:36,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-26 23:36:36,785 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:36:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:36:36,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:36:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:36:39,279 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 15 [2018-10-26 23:36:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:36:40,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 31 states and 34 transitions. [2018-10-26 23:36:40,818 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2018-10-26 23:36:40,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-26 23:36:40,819 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:36:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:36:40,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:36:41,236 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 23:36:41,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:36:41,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 25 states and 26 transitions. [2018-10-26 23:36:41,328 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-10-26 23:36:41,329 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 23:36:41,329 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 11 iterations. [2018-10-26 23:36:41,336 INFO L778 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2018-10-26 23:36:41,426 INFO L582 CodeCheckObserver]: Invariant with dag size 15 [2018-10-26 23:36:41,434 INFO L582 CodeCheckObserver]: Invariant with dag size 36 [2018-10-26 23:36:41,436 INFO L582 CodeCheckObserver]: Invariant with dag size 1 [2018-10-26 23:36:41,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 26.10 11:36:41 ImpRootNode [2018-10-26 23:36:41,437 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-10-26 23:36:41,437 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 23:36:41,437 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 23:36:41,437 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 23:36:41,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:36:33" (3/4) ... [2018-10-26 23:36:41,441 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 23:36:41,445 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-26 23:36:41,449 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-10-26 23:36:41,449 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-10-26 23:36:41,449 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-26 23:36:41,468 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (y == 18 && 2 * x == 7 * y) && x == \result + 3 * y [2018-10-26 23:36:41,487 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_670516be-31d7-4edb-a3cb-4c65aeaa60d4/bin-2019/ukojak/witness.graphml [2018-10-26 23:36:41,487 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 23:36:41,488 INFO L168 Benchmark]: Toolchain (without parser) took 8994.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 196.6 MB). Free memory was 960.7 MB in the beginning and 1.0 GB in the end (delta: -59.9 MB). Peak memory consumption was 136.8 MB. Max. memory is 11.5 GB. [2018-10-26 23:36:41,489 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:36:41,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.69 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:36:41,489 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.55 ms. Allocated memory is still 1.0 GB. Free memory is still 950.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:36:41,489 INFO L168 Benchmark]: Boogie Preprocessor took 15.81 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:36:41,490 INFO L168 Benchmark]: RCFGBuilder took 719.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -191.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2018-10-26 23:36:41,490 INFO L168 Benchmark]: CodeCheck took 8005.62 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 40.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 117.2 MB). Peak memory consumption was 158.1 MB. Max. memory is 11.5 GB. [2018-10-26 23:36:41,490 INFO L168 Benchmark]: Witness Printer took 50.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 618.7 kB). Peak memory consumption was 618.7 kB. Max. memory is 11.5 GB. [2018-10-26 23:36:41,495 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 23 locations, 1 error locations. SAFE Result, 7.8s OverallTime, 11 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7216 SDtfs, 2136 SDslu, 2024 SDs, 0 SdLazy, 9222 SolverSat, 3454 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1493 GetRequests, 1336 SyntacticMatches, 29 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7850 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 151 ConstructedInterpolants, 0 QuantifiedInterpolants, 21235 SizeOfPredicates, 54 NumberOfNonLiveVariables, 350 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 5/140 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (y == 18 && 2 * x == 7 * y) && x == \result + 3 * y - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((((((b == y && x == 63) && a + y == x) && y == 18) || (((b + x == 4 * y && x == 63) && a + 3 * y == x) && y == 18)) || (((b + 2 * x == 7 * y && x == 63) && a + 3 * y == x) && y == 18)) || (((x == 2 * y + a && b == y) && x == 63) && y == 18)) || (((b == y && x == 63) && a + 3 * y == x) && y == 18)) || (((b == y && x == 63) && a == x) && y == 18) - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 170.69 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.55 ms. Allocated memory is still 1.0 GB. Free memory is still 950.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.81 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 719.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -191.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * CodeCheck took 8005.62 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 40.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 117.2 MB). Peak memory consumption was 158.1 MB. Max. memory is 11.5 GB. * Witness Printer took 50.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 618.7 kB). Peak memory consumption was 618.7 kB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...